| Callsign structure | # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
|---|
| 1 | C C D C | AA1K | 147 | 29.52 % | | 158 | 29.48 % | | | 2 | C C D C C | AA1ON | 117 | 23.49 % | | 125 | 23.32 % | | | 3 | C C D C C C | CT7AOL | 88 | 17.67 % | | 90 | 16.79 % | | | 4 | C D C C | K0OB | 88 | 17.67 % | | 94 | 17.54 % | | | 5 | C D C C C | F4EFI | 29 | 5.82 % | | 30 | 5.60 % | | | 6 | C D D C | E75M | 7 | 1.41 % | | 11 | 2.05 % | | | 7 | C D D C C | E70NA | 6 | 1.20 % | | 6 | 1.12 % | | | 8 | D C D C C | 9A2AJ | 5 | 1.00 % | | 5 | 0.93 % | | | 9 | D C D C | 4L5P | 4 | 0.80 % | | 6 | 1.12 % | | | 10 | C D C | B0A | 3 | 0.60 % | | 5 | 0.93 % | | | 11 | D C D D C | 9A30T | 1 | 0.20 % | | 1 | 0.19 % | | | 12 | C C / C C D C C | ER/UT1ZZ | 1 | 0.20 % | | 1 | 0.19 % | | | 13 | C C D / C C D C | EA5/RV2A | 1 | 0.20 % | | 1 | 0.19 % | | | 14 | C C D / C D C C C | EA7/G4BJM | 1 | 0.20 % | | 1 | 0.19 % | |
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